interface/modules/zend_modules/library/Zend/Validator/Barcode/Code93.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Validator\Barcode;
  11
  12 class Code93 extends AbstractAdapter
  13 {
  14     /**
  15      * Note that the characters !"§& are only synonyms
  16      * @var array
  17      */
  18     protected $check = array(
  19         '0' =>  0, '1' =>  1, '2' =>  2, '3' =>  3, '4' =>  4, '5' =>  5, '6' =>  6,
  20         '7' =>  7, '8' =>  8, '9' =>  9, 'A' => 10, 'B' => 11, 'C' => 12, 'D' => 13,
  21         'E' => 14, 'F' => 15, 'G' => 16, 'H' => 17, 'I' => 18, 'J' => 19, 'K' => 20,
  22         'L' => 21, 'M' => 22, 'N' => 23, 'O' => 24, 'P' => 25, 'Q' => 26, 'R' => 27,
  23         'S' => 28, 'T' => 29, 'U' => 30, 'V' => 31, 'W' => 32, 'X' => 33, 'Y' => 34,
  24         'Z' => 35, '-' => 36, '.' => 37, ' ' => 38, '$' => 39, '/' => 40, '+' => 41,
  25         '%' => 42, '!' => 43, '"' => 44, '§' => 45, '&' => 46,
  26     );
  27
  28     /**
  29      * Constructor for this barcode adapter
  30      */
  31     public function __construct()
  32     {
  33         $this->setLength(-1);
  34         $this->setCharacters('0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -.$/+%');
  35         $this->setChecksum('code93');
  36         $this->useChecksum(false);
  37     }
  38
  39     /**
  40      * Validates the checksum (Modulo CK)
  41      *
  42      * @param  string $value The barcode to validate
  43      * @return bool
  44      */
  45     protected function code93($value)
  46     {
  47         $checksum = substr($value, -2, 2);
  48         $value    = str_split(substr($value, 0, -2));
  49         $count    = 0;
  50         $length   = count($value) % 20;
  51         foreach ($value as $char) {
  52             if ($length == 0) {
  53                 $length = 20;
  54             }
  55
  56             $count += $this->check[$char] * $length;
  57             --$length;
  58         }
  59
  60         $check   = array_search(($count % 47), $this->check);
  61         $value[] = $check;
  62         $count   = 0;
  63         $length  = count($value) % 15;
  64         foreach ($value as $char) {
  65             if ($length == 0) {
  66                 $length = 15;
  67             }
  68
  69             $count += $this->check[$char] * $length;
  70             --$length;
  71         }
  72         $check .= array_search(($count % 47), $this->check);
  73
  74         if ($check == $checksum) {
  75             return true;
  76         }
  77
  78         return false;
  79     }
  80 }